Count groups of ten and extra ones
Lesson details
Learning outcome
I can count more efficiently by grouping objects into tens and then counting the groups of tens and extra ones.
Key learning points
- Ten ones are equivalent to one ten.
- When counting larger groups, it is more efficient to group objects into tens, then count the tens and extra ones.
- We can work out how many there are by counting in ones, or by counting the groups of ten and extra ones.
Keywords
Digit - A single symbol used to make a numeral.
Common misconception
Children may only think of 'ones' in terms of the extra ones after the tens have been grouped, so may fail to see 45, for example, as 45 ones as well as 4 tens and 5 ones.
When objects are grouped in tens, use deliberate errors and discussion to draw attention to the total number of ones represented by the number, so children are familiar with recognising both the extra ones and the total number of ones in a number.
Teacher tip
Ensure there are daily opportunities to count groups of objects in tens and ones, so number names can be linked with quantities. Place value arrows are also useful for supporting understanding of the structure of two-digit numbers.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Sort these numbers in the order you would say when counting forwards.
Q2.How many tens can you see in the picture?
Q3.Which of the following represents the number shown on the Gattegno chart.
Q4.Laura has 50 counters. She wants to record this on the place value chart. Which place value chart is correct?
Q5.How many tens are in the number thirty?
Q6.Match the numerals to the words that have the same value.
50
40
80
Assessment exit quiz
6 Questions
Q1.Look at the picture and fill in the missing number. There are 7 groups of ten and extra ones.
Q2.Which of the following shows ten?
Q3.Which Gattegno chart represents the groups of tens and ones shown?
Q4.Laura puts the pencils into groups of ten. She has 8 tens and 6 extra ones.
If they were counted in ones, how many ones would there be altogether?
Q5.Which place value chart represents the picture shown?
Q6.Match the words to the numerals that have the same value.
56
65
32
23
To help you plan your 2 maths lesson on: Count groups of ten and extra ones, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 2 maths lesson on: Count groups of ten and extra ones, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
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